Photographic camera with an automatic flash operating mechanism



Sept. 3, 1963 H. KOPPEN 3,102,461

PHOTOGRAPHIC CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Filed Jan. 24, 1962 I 5 Sheets-Sheet l Sept. 3, 1963 H. KOPPEN 3,102,461

PHOTOGRAPHIC CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Filed Jan. 24, 1962 5 sheets sheet 2 150 i I -I 1 1 184568 1 27 49 122 2 U 2a 44 ,37 25 e 4 2 a9 23 a" a 20 (I I 17D Sept. 3, 1963 H. KOPPEN 3,102,461

PHOTOGRAPHIC CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Filed Jan. 24, 1962 5 sheets-sheets Sept. 3, 1963 KOPPEN 3,102,461

PHOTOGRAPHIC CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Filed Jan. 24, 1962 5 Sheets-Sheet 4 Sept. 3, 1963 H. KC5PPEN 7 3,102,461 PHQTOGRAPHIC CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Filed Jan. 24, 1962 5 Sheets-Sheet 5 equation 'PnorocnArnIc CAMERA WITH AN AUTOMATIC FLASH OPERATING MECHANISM Heinz Kiippen, Stuttgart, Germany, assignor to Zeiss lkon l p Aktiengesellschaft, Stuttgart, Germany I Filed Jam-24, 1962, Ser. No. 168,363 Claims priority, application Germany Feb. 2, 1961 20 Claims. (CI. 95-10) This invention relates to. a photographic camera, a photographic objective and a photographic shutter, respectively, provided with an automatic flash operating mechanism. V

. It is anobjectof the invention to provide such an automatic flash operating mechanism which upon manual adjustment to a desired flash guide number and a desired Diaphragm Aperture==Guide Number:Distance In accordance with the inventionthe photographic device, such as a camera, is provided with a diaphragm and a diaphragm aperture adjusting means, a flash guide 1 Uflitsdstates Patent 3,102,461 i. Patented S ept. 3, 1963 number adjusting member and a distance adjusting member.

' ified construction of the invention,

FIGS. 3, 4 and 6 illustrate each another embodiment number adjustingrnember, distance adjusting member for focussing the camera objective and means for coupling said flash guide number adjusting member with said distance adjusting member so as to operate the mernher for adjusting the diaphragm aperture to the required size for effecting a predetermined exposure of the film in the camera. f

It is an important object of the invention to provide a photographic deviceof the above mentioned character with a coupling means which includes a diiferential gear.-

ing which is operatively connected with the flash guide number adjusting member, the distance adjusting member and the diaphragm aperture adjusting member.

Stillanother object of the invention resides in providing a photographic camera objective with a flash guide number adjusting ring, a distance adjusting ring for focussing the camera "objective, and a diaphragm provided with a diaphragm aperture adjusting ring, whereby all of said rings are arranged concentrically about the optical axis of the camera objective and means are provided which include a differential gearing for operatively connecting the flash guide number adjusting ring, the distance adjusting ring and the diaphragm aperture adjusting ring for adjusting the diaphragm aperture in response to a manual adjustment of the ilash guide number ring and the distance adjusting ring to the required aperture size. Thefidilierential gearing consists of a first sun gear at- FIG. 2 illustrates in a similar view as" FIG. 1 amodof' the invention in a view similar to FIG. 1, and I .FIG. 5 illustrates diagrammatically a portion of another embodiment of a "differential gearing which may be employed in connection with the arrangementof the invention. I

Referring to FIG. 1,-the rotatably adjustable changeover ring 19 indicates the different ranges within which the camera, the shutter or the objective is able to opera-tel The flash bulb operating range on this ring 19 is indicated by a flash guide number scale Eififlwhile 45? indicates the rather short range within which the automatic exposure mechanism is operative. .This range 49 is provided with a single indicating mark A. A diaphragm aperture scale 2s extends over that range within which the diaphragm aperture may be manually selected or preselected. Astationary part of the camera is provided with a fixed index 21 with respect to which all the mentioned scales are adjustable and readable;

Next to the change-over ring 19-is arranged a distance B and is provided with gear teeth 28. This projection 27' tached to and driven by the flash guide number adjust,

ingringwhile a second sun gear is provided to-be driven by said'distance adjustingring, and a planetary carrier ing havingrotatably mounted thereon a planetary gear meshing'wim both said sun gears. Furthermore, means "are provided on the planetary carrier ring. for operating the diaphragm aperture adjusting ring.

With these and other objects view the invention will now be described in more detail with reference to the accompanying drawings which illustrate by way of example a few embodiments of the invention,

In the drawings: 5 i FIGUI illustrates diagrammaticallya front elevation view or a photographic objective provided with an arrangem-ent for automatically adjusting the diaphragm of t the objective in responseto adjustments of a hash guide with the gear teeth 28 thereon forms a sun gear of a differential gearing 28 to 3 1., The change-over ring 19. is also provided on its inner circumference with a disconnecting earn i-8 arranged on a curvedportion 47 which extends concentrically about the optical axis B. Finally,v

the change-over ring 1 9 is provided on its inner circumference with a cam '64 provided with a convex recess 57 The cam 64 is operating a tracking mechanism belonging to the photoelectric exposure meter and Which becomes effective when the mark A is moved in opposition to the stationary index 21. This tracking mechanism 'cooperates with a lever 55 fixedly attached to a shaft56/ One end 55a of the lever 55 is provided with a point62 adapted to cooperate with! abutment steps 54 providedon" a diaphragm control ring 4. The lever 55 is inoperative in the position shown in (full lines in FIG. 1 because a I tracking pin 63 on the lower 'end of the lever 55 is in of the series of abutment steps 54 For a further illustration in what manner the photoelectric exposure meter actuates a tracking member which in turn'rotates the shaft 56, attention is called to the inventors copending U.S. patent application Serial No. 156,740, filed on December 4, 1961, particularly FIG. 8. v

The, inner circumference of the distance adjusting ring 1 is provided with aninwardly extending portion which has a longitudinal aperture 3a one edge of which forms a control cam 3 which cooper'ates with a tracking pin 24 provided on a toothed'sector 23 pivotally mounted about a stationary pivot pin 44-. Thetoothed sector 23 is provided with gear teeth 25 which are in engagement with a second sun gear 30. A spring 37 constantly urges the toothed sector 25 in a direction in which the tracking pin 24 ismaintained in enga'gement. with the control cam 3.

The two sun gears 28 and 30 are arranged concentrically about the opticalaXis'B and both are in engagement with the planetary' gear 29 the axis of rotation of which isarranged on the planetaryv carrier ring 31.

'Phoplanrtziry carrier ring 31 is provided onits fr'ont tion ;with the stationary index ill whichis used for read ingthe'scale valuesprovided' on thechange-over ring 1 9 and on the distance adjusting ring 1. Furthermore, the

planetary carrier ring 31is provided with a radially ex- 1 tendi-ng'projectiOnSZ which cooperates with a projection or abutment provided on the rotatable diaphragm aperture adjusting ring 4 which may consist of one of the twocustoniarydiaphrag'm cages. The position of the projection 32 as shown in a solid line indicates the greatest possible diaphragm apenture whichi inthe present case is f:2;.while the position '3 2aof this projection as shown in diaphragm aperture which in'this particular case is fzZZl I The diaphragml apenture adjusting ring 4 is, as indi, cated'by the position of one of the diaphragm segments 15, adjusted to the largest diaphragm aperture when the shutter of the photographic camerais't'e'nsioned. -An operating member 7 is actuated by the shutter tensioning v mechanism and will be in the position as shown in a full line in FIG. 1 when the'shutter is tensioned. When the camera shutteris' released, however, this operating rnechanism will assu'me'the position indicated in dashed lines is arranged in such a'rnanner that it constantly urges the diaphragm aperture adjusting ring 4 in a direction in l which the diaphragm is adjusted to its smallest aperture.

.Upo'n release of the camera the dia'phragm aperture adjusting "ring rotates rearwardly in clockwise direc-' tion a distance depending upon how complete this rear'' ward movement can take place. During this rearward movement the diaphragm is closed more and more. During the closing of the diaphragm the illustrated diaphragm segmen'tj1'5 (the diaphragm ris, of course, forrned of a plurality of segments is pivoted about a pivot pin 16 arranged on a second diaphragm cage iw-hich, however,-is

not illustrated. The segment lb'dmoves into the light 'face withfadiaphragm aperture scale 122 which is visible v 1 from theoutside of thedes'cribed [arrangement and Whose individual values are readable when brought into opposirier ring 31 its radial projection moves into the-posh tion 32a indicated in dashed lines and as previously stated, this is the position in which the diaphragm has been adjusted to its smallestsize, v

When the shutter of the camera is operating member 7 jumps into the-position indicated in dashed lines 7a and the rotatable diaphragm aperture adjusting ring' i as .a result of the tensionedspring-'8 performs its rearward movement in clockwise direction.

As soon as the projection 10 engages the lefthand side of the projection 32a the smallest aperture possible, namely f:22,is formed. 1 1 p In order to describe the changeof the diaphragm aperture in dependence of the distance adjustment, one

may start out again with the positions and adjustments of the ringsland 19 illustrated in FIG. 13in which the flashguide number 16 is opposite the distance ofQS m and both these values are in oppositiont'o the stationary a dashed line inFIG. 1 indicates the smallest possible passage aperture 26 of the photographic objective and during the rearward movement of the diaphragm aperture adjusting'ring4 is moved in such a manner that the pivot pin 17 controlling this movement is moved downwardly along a curved slot 18 in the ring 4.

The lever 55 which cooperates with the series of abutment steps 54 provided on the diaphragm aperture adjusting ring 4 jand operated by the automatic exposure mechanism isfpreferably mounted on a shaft 56 which is arranged below the sun gear 30.

The" operation of (this arrangement, illustrated in FIG. 1

is as 'follows:"

Upon adjustment of the change over ring 19 toa higher guide number, for instance to 17 6, the change-over ring 19 performs a c=lockwiserotation and this causes a corresponding clockwise rotation of -the first mentioned sun gear 27, 28. It is assumed that the distance adjusting ringjl. remains. inthe illustrated position which the stationaryindex 21 points to 8 m, Under these'conditions theplanetary gear Z9 including its carrierring 31 rotates fa certain distance-tin clockwise direction since the planetary 'g'ear w' rolls along the inert stationary sun gear-3Q, Owing ,to this movement of the planetary carlines in FIG. 1 and the result is that-the diaphragni'is v adjusted to its greatest aperture f:2. The distance adjustment ring 1 may now-ibe rotated inclockwise direction until the distance scale indicating 2 m, is opposite the guide number 16 which remains in opposition to the stationary index 21. This means that the change-over ring 1-9 remains in .its position and therefore the sun gear 27, 28 also remains in itslillustratcdposition. A movement of the planetary carrierring .51 and a resulting change in the sizeflof the diaphragm aperture which is performed by a change in :theposition of the projection 32 canonly then take place by means of the cam 3 provided on theldistan'ce adjusting ring il the toothed sector -25" and the planetary gear 29. which is in mesh the inner sun gear 30. when the distance-adjusting ring 1 l is rotated clockwise direction, the tracking pin 24 on the toothed sector 25 moves along :a less steep portion of the control cam 3 so that in view of the veffect of the spring 37 the toothed sector 25 performs a rotativemover'nent in counterclockwise direction since the toothed sector 25 is in engagement with the inner sun gear 30;

The latter is caused to perform a clockwise movement I and since the planetary gear29 'rolls' along the now sta;

tionary sun gear 27, 28, the planetary carrieriring'f'al is rotated a corresponding distance. 7 This movement is calculated in such a manner that the projection 32' remains in a position in which upon a release of the camera shut- Iflash lightrange to the automatic exposure operation," it is required that the distance-adjustment and the pivotally mounted lever 55 are independently operable. Ar'r'ee ro-tativemovement of the lever 55- is possible as stated previously when the tracking pin 63 of the lever 55 enters into the recess 57 of the cam 64. The required independent \adjustabilityfof the distance adjusting ring 1 without causing an operation ofthe difierential gearing V is accomplished by'rlrst adjusting the mark A yopposite the iact'that it is engagedby the sun gear27 ,'28 and the stationary index 21, whereby the severely inclined disconnecting cam 48 on the change-over ring 19 becomes efiiective. This cam 48 moves the tracking pin 24 on v the toothed segment 25 away from the control cam 3 1 on the distance adjusting ring 1 and fixes the toothed segment 25 in this inoperative position. A rotation of vthe change-over ring 19in clockwise directionjcauses also a rotationof the planetary carrier ring 31 in 'view of accordingly the planetary gear 29 rolls along the inner sun gear 30. This; causes a movement of the radial projection 32 into an extreme position which corresponds now released, the

' somewhat beyond the same.

phragm aperture when the'shutter of the camera is released. The range of movement of the diaphragm aperture adjusting ring orof the diaphragm cage 4 is now only dependent upon the position of; the lever 55 and its .angle of incidence with respect to the series of abutment steps 54.

When the change-over ring 19 is rotatably adjusted still more a small distance in clockwise direction so that the stationary index 21 moves into the range of" the manual diaphragm adjustment 2% or of the diaphragm preselecting range, it is necessary that according to the indicated value of the diaphragm aperture scale a corresponding position of the radial projection 32 is secured. When moving the change-over ring 19 from to thevalue f:2,then a small rota-tive movementof the sun gear 23 in clockwise direction takes place which tends to move the planetary carrier ring 31 likewise in clockwise. direction. The resulting additional movement of the disconnecting cam '48 causes a rotation of the toothed segment in clockwise direction which causes La rotation .of the sun gear in counterclockwise direction. This rotative movement is so calculated that'the planetary carrier ring 31 performs also :a rotative movemen-t in counterclockwise direction which is terminated in the position indicated by the radial projection 32 shown in solid lines. This position corresponds, however, as already stated, to. a diaphragm aperture #2. vThe tracking pin 24 on the toothed segment 25 will now enter the concentric slot 47 on the cha-ngeover ring 19' whereby the toothed segment 25 is iixed in its inoperative posi-. tion within the entire range in which a manual selection of the diaphragm aperture is possible. from now on, namely from the selection of a diaphragm aperture 722 to a smaller diaphragm aperture, the inner sun gear 30 is. made stationary.

This means that radial projection 137 extending outwardly from the diaphragm aperture adjusting ring 4a. i

The operation of the invention illustrated in FIG. 2, as far as 'theintroduction of the distance and guide number values into the diaphragm mechanism is concerned, corresponds completely to the embodiment illustrated in FIG. 1. Solely the rearward movement of the rotatable diaphragm aperture ring 4:: upon release of the shutter of the camera is replaced by a manual rearward rotation which is effected by the pressure button arrangement130 to 137. Furthermore, the formation of the diaphragm aperture by means of the automatic exposure mechanism and the adjustment of the diaphragm within the manual Q adjusting range indicated by the scale 20v is the same the mark A, which indicates the automatic exposure range, to the manual diaphragm adjusting ring 20 and as shown heretofore in connection with FIG. 1.

FIG. 3 illustrates still another embodiment of the inventionwhich differs from the embodiments shown in the FIGS. 1 and 2 by the fact that the spring operated diaphragm mechanism is replaced by an arrangement'for a direct-adjustment of the diaphragm in dependence of the distance adjustment and the flash guide number adjustment. Accordingly, the embodiment of FIG. 3 pro- 1 vides a direct coupling connection between the diaphragm aperture adjusting ring 41) and the planetary carrier ring 3112 in the form of a radial bar 100* which integrally connects these two rings with one another.

The embodiment of the invention illustrated in FIG. 4

vdiffers from the previously described embodiments in When a diaphragm aperture is desired which is smaller than #2, the change-over ring v19 has to be rotated in clockwise direction whereby the planetary gear 29 rolls along the, stationary sun gear 39 which has the result 1 that the planetary carrier ring 31 is rotatably adjusted in clockwise direction so that its radial projection 32, depending upon the selected diaphragm aperture, moves a corresponding distance with the ring 31. When the diaphragm is adjusted to the smallest aperture #22, the radial projection 32 on the ring 31 assumes the position 32a and in view of the now possible return movement of the rotatablediaphragm aperture adjusting ring 4-,

upon release of the shuter of the camera, the diaphragm is. adjusted to its smallest aperture;

FIG. '2. illustrates an embodiment of the invention which ditfers from the one illustrated in FIG. 1 only by the fact that in place of the spring operated diaphragm mechanism a pressure diaphragm adjusting mechanism is employed. Accordingly, the operating element '7 for the diaphragm aperture adjusting ring 4 and the spring that a tracking mechanism for the automatic exposure operation has been added which dispenses with the previously employed pivotally mounted lever and the series. of abutment steps 54-, but cooperates with the already present toothed segment 25. The tracking mechanism consists substantially of a tracking body 38 provided with a series of tracking steps 39. Upon tensioning of the camera this tracking body 38- is maintained in position by a blocking element 70 which is operated by the shutter mechanism and is held against the action of a spring 40 with a pin 4-2 in engagement with the changeover ring 19. The pin 42 is attached to a rod i1 which is integrally formed with. the tracking body 38 and is slidably supported in a suitable stationary guide formed for instance in a wall of the camera casing. The dots forming the line 43 indicate different possible positions of a tracking element for the positions of the indicator of the photoelectric exposure meter. This tracking element forms at the same time an abutment for the different steps 39. The changeover ring 19 is again provided with a connecting cam having the shape of a recess 57d which when the mark A is opposite the stationary index 21 permits the rod 41 to drop into this re- -cess 57a whereupon the tracking body 38 can freely 60 8 for actuating the latter are dispensed with. In place tively connected with the diaphragm mechanism. The

pressure button 13%) is adapted to be pushed downwardly against the action of a spring which surrounds the rod 131, whereby one end of the spring engages a shoulder 13-6 on the pressure button 130, while the other end of the spring 132 rests upon the upper face of the bearing 133. Thelower or inner end of the rod 131 is connected by means of a pin and slot connection 134,1135 with a move. 'The disconnecting cam 48 which in this position of the change-over ring19 becomes eiiective has lifted the tracking pin 24 on the sector 25 from the control cam 3 on the distance adjusting ring 1 so that any desired distance may be selected within the range of the automatic exposure mechanism. The formation of the required'diaphra'gm aperture is efiected in this manner that the tracking body 38 depending upon the position of the tracking element 43 is moved more or less downwardly until one step of the series of steps 39 engages the element 43.- When this occurs, the rod 41 presses downwardly upon the toothed segment 25 which is then pivotally moved more or less in clockwise direction causing the sun gear 30 to rotate counterclockwise. The planetary" gear '29 which is driven by the sun gear 30 nowrotatably moves the planetary carrier ring 31 because the gear 29 rolls along the stationary sun gear 28 and depending upon the movement of the rod 41 the respective diaphragm aperture is adjusted in the diaphragm mechanism.

a of the objective.

movement-of said second sun gear W-hensaid distance adjusting ring isrotatably adjusted. v V Awphotograp hic objective according to claim 1, in

which said'plane-tary carrier ring is provided with a diay phnagmape rture scale which is visible from, the exterior .6. A photographic objective according to claim 1, in

which one of said sun gears is arrangedwithin the'other "sun gear (FIGS. 1 r04),

7. ;A photographic objective: according to claim 1, in

are arranged in axial spaced" relation 'with said planetary gear arranged between the same in operative relation.

8. A photographic objective according to claim Lin 2 which said flash guide number ring is constructed as" changeover ring whichgnpon rotative adjustment with respect to;a common station ary index is adapted to selecposuresb i 1 p I 9. A photographic objectiveaccording to claimxl, in whichsaid flash guide number ring is'con'structed as change-over l'ingtwhichfiupon rotativeoadjustment with respect to a common stationary index is adapted toselec- -tively-:adjust the camera objective "for flash exposures, automatically adjusted exposures controlled by a photoelectric exposure meter, and for manually control-led exposures, said change-over.ring ;being provided with three serially arranged operating-ranges indicated by a guide number scale, an autornatic exposure .mark and a diaph-ragm aper-ture scale.-

-10 WhiChbaid two'sun gears have the {same diameter and H .10 radially extending projection forming an abutment for engaging a radially extending projection on said diaphragm adjusting ring,

' H (j) said flash guide number ring being constructed as I in which upon adjustment of said change-over ring to the position indicating an automatic adjustment of the exposure the resulting adjustment of's'aid planetary carrier ring is .such that the radially extending projection thereon moves into such a posit-ion that the rotatable diaphragm adjusting ring is adapted to be moved by said tively adjust the carner-a objective forjflash exposures,

automaticallytadjusted exposures controlled by aphoto-. 1 electric exposure meter, and for manually controlled ex-' exposure meter to any required'position.

pl3. A photographic objective according to claim 11, including means which upon'adjustment of said changeover ring to the range for manually controlled exposures move'said planetary canrier' ring into a position which I permits the adjustment of the diaphragm adjusting ring 10. A, photographic objective according to claim 1,

in which said flash guidenur'nber ririgjis constructed as change-over ring'Which upon notaftive.adjustment with respect to a'com'mon stationary indexis'adaptedto selectively'adjust' the camera objectivetjfo'r fiuash exposures,

automatically adjusted exposures controlled by a photo- ,electric'exposurefmeter, and-formanual-ly controlled ex- 2 -posures, sa id chrang wy'er ring being provided with three solely by said first sun gear .to any desired diaphragm aperture as indicated-by said diaphragm aperture scale on saidch'ange-overring.

' 14. A photographic objective according to-claim l, in

which said flash guide number ring is constructed as a change-over ring which upon rot-ative adjustment with respect to a common stationary index is adapted to selectivelyadjust the camera objective for flash exposures, automatically ladjustedexposures controlled by a photoelectric exposure meter, and for manually controlled exposures,

said change-over ring being provided with an inwardly extending recess, and including a longitudinally movable rod controlled by said photoelectric "exposure meter and a series of abutment steps adapted to'be engaged by a Etracking element of said exposure meter upon release of seriallyfirrange d openating'ranges indicated-by a guide number scale, ,anautornatic exposure mark and 'a diarpliragm aperture scale, .said change-over ring being also provided-with a disconnecting earn which renders the drive of saidisecond sungear bysaiddis'tance adjusting ringinoperative when said change over ring is adjusted to either said, automatic exposure range or'said manually adjusted exposures.

lll A photographic camera objective comprising in combination: a v

(a) a flash guide number adjusting ring,

I objective, t l V 1 (c) I a diaphragm provided with a diaphragm aperture (a). tall; of said ringsbeing arranged concentrically about the optical a'xis 'of said camera objective,

said camera, said rod being adapted to enter said recess when said change-over ring is adjusted to the position indicating automatic exposure adjustment and causing an adjustment of said diaphragm adjusting ring-by said sec and sun gear and said planetary carrier ring (FIG. 4)

15. A,-photo'graphic objective according to claim 1 in w-hioh said-flash guide number ring is constructed as a "change-over ring. which upon rotative adjustment with respect to a common stationary indexis. adapted to selec- (b) a distance adjusting jring'for-focussing the camera (e) means including a diflerentialgearing for opena- I "iti vely'connecting said flash guide number ring, said dis'tanceadjusting 'ringgand' said diaphragm aperture adjusting ring for adjusting said diaphnagm aperture *in response to'a manual adjustment of said flash guide' nunrberfring and said distance adjustingring to the required aperture size,

(f) said differential gearingcomprising la first sun gear attached to and driven by said flash guide'number v adjustin'g ring,

(g) a second sun geardriven by ing ring, and

.(h) :a planetary car-rier'ring said distance adjust- I gears, and means on said carrier ring for operating said diaphragm aperture adjusting ring, (i) said planetary carrier ring'be-ing provided with a I having rotatably mounted thereon-a planetary gearmeshing With both saidisun tivelyjadjust' the camera objective for flash exposures,

automatically adjusted exposurestcontrolled by a photoelectric exposure meter, and for manually controlled exposures, said change-over ring being provided with an inwardly extending recess, and including a longitudinally movable rod controlled by said photoelectric exposure meter arid-ja-series of abutment steps adapted to be engaged by a tracking element of said exposure meter upon release of said camera, said rod being ada-pted to enter said recess when said change-over ring is adjusted to the position indicating automatic exposure adjustment and causing an adjustment of said, diaphragm adjusting ring by said second sun gear and said planetary carrier ring, said longitudinally movable rod being sovconstructed and arranged that said rod is caused to act directly upon said diaphragm adjusting ring (FIG. 6).

16. ,A photographic objective according to claim 1, in which said flash guide number ring is constructed as a change-over ring which upon rotative adjustment with respect to a common stationary index is adapted'to selectively adjust the camera objective for flash exposures, automatically-adjusted exposures controlled by a photoelectric exposure meter, and for-manually controlled exposures, said change over ring being provided with an inwardly extending recess, and including a longitudinally movable rod controlled by said photoelectric exposure meter, and a series of abutment steps adapted to be engaged by a tracking element of said exposure meter upon release ofsaid camera, said" rod being adapted to enter said recesswhen said changeover ring is adjusted. to the position indicating automatic exposure adjustment and causing an adjustment of said diaphragm adjusting ring by, said second sun gear and said planetary carrierringg said longitudinally movable rod being so arrangedthatit acts directly upon saidjsecond sun gear for adjusting said dias phragm adjusting ring I inwardly extending recess, and including/a longitudinally r'n'ovable'rod controlled by said photoelectric exposure meter and a series of abutment steps adapted to been I gaged by a tracking-element of said exposure ineter'upon g c release of said camera; said rod beingadapted to enter causing an -adjustment of said diaphragm adjusting ring by said second sun "gear and said planetary carrier ring, said said recess when said change-over ring is adjustedvto the pQsitiOn indioating automatic exposure adjustment and longitudinally movable rod being so arranged that it v 1 acts directly. upon said planetary carrier ring for' adju'sti'ng 9 said diaphragm adjusting ring.

l 8. .A photographic objective comprising in cornbination: 'i

Y (a) a flash guide number adjusting ring,

(b) a distance adjusting ring for focussing the camera I objective,

. adjusting ring,

'tivly connecting said flash guidenumberring, said distance adjusting ring and said diaphragm-aperture I 1(d) "all of said" being arranged concentrically I j a' bout the. optical axis of said camera -objective,-and (2 means including a differential gearing for opera (fc)'a diaphragm provided with a diaphragm aperture adjusting ring for adjusting said diaphragm aperture qin'response to a -manual adjustment of-said flash 1 i guidehu-mber ring and said distance adjusting ring to the required aperture size,

(f) said flash guide number: ringbeing constructed as, a' change-over ring which upon rotative adjustment with respect to a common stationary index is adapted to selectivelyadjust the camera .objective wfor flash I exposures," automatically adjusted exposures; conv trolled by aphotoelectric exposure meter andtor manually controlled exposures. 19. A photographic tion'fl v v r, I a a flash guide number adjusting ring, 1 (b) a distance adjusting ring for tocus' objective comprising in' c'ornbin ang objective;

(c) .a diaphragm provided vvith a diaphragm: aperture adjusting ring, v

the camera 5 (d all of said rings being arranged:

adjustingring for adjustingsaid diaphragm aperture in response to a manualadjustment of-said fiash guide number ng and "said distance to the required aperture size,

respect to -a com-inon stationary indexis adapted to trolled by a"photoelectric exposure meter; and for manuallyjcontrolled exposures, -said change-over ring ranges indicated by. aguideinurnber scalej an auto'-' nation: ,j l x (a) a flash guide number adjusting ring,

(b). a distance adjusting ring tier iocus'sin g objective; 5 i (c) .5 diaphragm provided.

- adjusting "ring,l'

(d) all of "saidfringsfibeing arranged concentrically about theoptical laxisof'said camera objectivqand (e) means including a differential gearing for opera tivelyi connecting said flashguide"numberring 'said distance adjusting ring and said. diaphragm aperture adjusting ring for adjustin'gj said diaphragrn aperture I tguide'number'ring and said distance adjusting ring tothe requiredaperture size, w

(1) said flash guide'fnumber ring being constructedasa V change-ov er 'ring which upon rotative adjustment with V respect to'a icornmon stationaryindexisadapted to. 'i selectively adjust the-camera objective foriflashexposures, automatically adjustedexposures controlled 7 by a photoelectric exposure me't i I and for manually controlled exposures said Chan overring'bein g projvided with three-serially a riwanged=operating ranges, indicated byiag g'uide number scale, an automatic exposure rnark a-nd a diaphragm aperture scale,ls ai'cL 1;;

'. changeover ring rbein gfia lso providedfwitlh' a disconnecting cam which rendersthe drive of said second 'sun gear by said distance adjusting ring inoperative when said change-over ring is adj ust'ed'to'either said automatic exposure range or saidmanuallyadjusted exposuresi' References Cited in the file of patent i I QNITEDSTATES PATENT 2,953,978

- Rentschler j..

concentrically aboutthe opticalaxis ofsaidzcamera objective, and (e) Ineansincludinga difierentia'l gearing for opera ,tively connecting said flash guidenumberringysaid 1 J distance adjusting ring and said diaphragm aperture adjusting ring s 5;

I ;(j'-)' said flash guide number ring being constructed asa change-over ringvvhich upon rotative adjustment with selectively adjust thefcarn'era objective'forf-fiash' I exposures, automatically adjusted exposures 'co nbeing provided with three -serially arrangedoperating 1 inatic exposure snarkandagdiaphraginaperture scale. 20. A photographic objective comprising, in combi-L the camera l with a diaphragm aperture '7 l in response to -a manual vadjustment :ofsaidiiash 

1. A PHOTOGRAPHIC CAMERA OBJECTIVE COMPRISING IN COMBINATION: (A) A FLASH GUIDE NUMBER ADJUSTING RING, (B) A DISTANCE ADJUSTING RING FOR FOCUSSING THE CAMERA OBJECTIVE, (C) A DIAPHRAGM PROVIDED WITH A DIAPHRAGM APERTURE ADJUSTING RING, (D) ALL OF SAID RINGS BEING ARRANGED CONCENTRICALLY ABOUT THE OPTICAL AXIS OF SAID CAMERA OBJECTIVE, (E) MEANS INCLUDING A DIFFERENTIAL GEARING FOR OPERA-TIVELY CONNECTING SAID FLASH GUIDE NUMBER RING, SAID DISTANCE ADJUSTING RING AND SAID DIAPHRAGM APERTURE ADJUSTING RING FOR ADJUSTING SAID DIAPHRAGM APERTURE IN RESPONSE TO A MANUAL ADJUSTMENT OF SAID FLASH GUIDE NUMBER RING AND SAID DISTANCE ADJUSTING RING TO THE REQUIRED APERTURE SIZE, (F) SAID DIFFERENTIAL GEARING COMPRISING A FIRST SUN GEAR ATTACHED TO AND DRIVEN BY SAID FLASH GUIDE NUMBER ADJUSTING RING, (G) A SECOND SUN GEAR DRIVEN BY SAID DISTANCE ADJUSTING RING, AND (H) A PLANETARY CARRIER RING HAVING ROTATABLY MOUNTED THEREON A PLANETRY GEAR MESHING WITH BOTH SAID SUN GEARS, AND MEANS ON SAID CARRIER RING FOR OPERATING SAID DIAPHRAGM APERTURE ADJUSTING RING. 